SOLUTION: 4 masons can build a 12 metres long wall in 4 days.find how many masons are required to build the 27 metres long wall in 3 days?

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Question 422797: 4 masons can build a 12 metres long wall in 4 days.find how many masons are required to build the 27 metres long wall in 3 days?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
4 masons can build a 12 metres long wall in 4 days.
Find no. of man-days to build 1 meter
%284%2A4%29%2F12 = 11%2F3 man-days/meter
:
find how many masons are required to build the 27 metres long wall in 3 days?
:
Let m = no. of mason required
3m = 27*11%2F3
3m = 27*4%2F3
cancel 3 into 27
3m = 9(4)
3m = 36
m = 36%2F3
m = 12 masons required to build a 27 m wall in 3 days